Nutritionally speaking, that is. A gut-stuffing lineup of four late-night meals — including one that actually stacks a grilled-cheese sandwich atop an already gloppy cheeseburger — is rolling out at Jack in the Box restaurants nationwide.

The nighttime meal offerings — which also come packed with two tacos, a mixed order of french fries and seasoned curly fries and a 20-ounce beverage — almost make the once-heckled Monster Burger at Hardee's look, well, tame. They're called Jack's Munchie Meals — only sold between 9 p.m. and 5 a.m. Price tag: $6.

"They are a disaster," says registered dietitian Robyn Flipse. "They must have hired some very stoned Millennials to dream this stuff up."

Not at all, says Keith Guilbault, vice president of menu innovation at Jack in the Box, which has 2,250 locations in 21 states. "This is targeted at folks looking for indulgent treats," he says. Among them: late-night shift workers and Millennials who get the munchies at odd hours.

“They must have hired some very stoned Millennials to dream this stuff up.”

Dietitian Robyn Flipse

Most of the meals are crammed with roughly the total number of calories many folks should consume in an entire day, notes Beth Vallen, a marketing professor at Fordham University who specializes in food issues. Forget the growing national movement toward better-for-you eating. This, she says, is a very clear case of "negative nutrients" increasingly being marketed as acceptable late-night eats.

The Jack's Munchie Meal offerings:

•Stacked Grilled Cheeseburger. A sourdough grilled-cheese sandwich placed on top of a cheeseburger. Total Meal: 1,679 calories and 3,538 milligrams of sodium.

•Loaded Nuggets. Nuggets drowning in two kinds of cheese and ranch dressing and bacon. Total meal: 1,592 calories and 3,593 milligrams of sodium.

•Brunch Burger. A cheeseburger with a fried egg and hashed-browns patty on top. Total meal: 1,708 calories and 2,993 milligrams of sodium.

This is Jack in the Box's bid to ramp-up late-night business, one of the few growth categories in fast food. Witness Taco Bell's Fourth Meal and later hours at McDonald's, Burger King and Wendy's. Jack in the Box will promote the new offerings with "a twisted version" of its spokescharacter, Jack, dubbed Late Night Jack, who'll be seen playing video games, says Guilbault.

But Flipse, the nutritionist, is unimpressed. "The only reason I can see for this line is that they are only available after 9 p.m.," she says. "That's when, as they say, you don't know if you're eating supper or breakfast because you are in an altered state of mind."